91 honda civic si rod bearing?

I took apart my 91 honda civic si today because the 2nd cylinder had a knock. Upon takin it apart the bottom of the connecting rod had a little "wobble" . So i figure its a bearing so i took the bearings from another connecting rod in the car and put them on the 2nd cyl and there was less wobble but still it wobbled ever so slightly. Do i need a whole set of new connecting rods or is the crank arm worm away? or what?